DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

(Photo by Dave Reginek/Getty Images)

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

(Photo by Dave Reginek/Getty Images)

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

(Photo by Leon Halip/Getty Images)

DETROIT, MI - OCTOBER 16: Ray MacDonald #91 of the San Francisco 49ers signals a safety on Matthew Stafford #9 of the Detroit Lions in the second quarter of the game at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Leon Halip/Getty Images)

San Francisco 49ers v Detroit Lions

(Photo by Leon Halip/Getty Images)

DETROIT, MI - OCTOBER 16: Jim Harbaugh head coach of the San Francisco 49ers argues with Jim Schwartz of the Detroit Lions during the NFL game at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Leon Halip/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 16: Ray MacDonald #91 of the San Francisco 49ers signals a safety on Matthew Stafford #9 of the Detroit Lions in the second quarter of the game at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Leon Halip/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 16: Ray MacDonald #91 of the San Francisco 49ers signals a safety on Matthew Stafford #9 of the Detroit Lions in the second quarter of the game at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Leon Halip/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 16: Cliff Avril #92 of the Detroit Lions pumps his arms after a tackle during a NFL game against the San Francisco 49ers at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

DETROIT, MI - OCTOBER 16: Cliff Avril #92 of the Detroit Lions pumps his arms after a tackle during a NFL game against the San Francisco 49ers at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

(Photo by Dave Reginek/Getty Images)

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)

San Francisco 49ers v Detroit Lions

<> at Ford Field on October 16, 2011 in Detroit, Michigan.

San Francisco 49ers v Detroit Lions

<> at Ford Field on October 16, 2011 in Detroit, Michigan.

San Francisco 49ers v Detroit Lions

DETROIT, MI - OCTOBER 18: during a NFL game between the San Francisco 49ers and the Detroit Lions at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images)